seat

I have a 2008 Chevy Silverado extended cab and I want to add some subs to it. My top choice would be the kicker 12" L7's, but if I cannot create enough space under the seats I will switch to different ones. I Just want a lot of loud bass. I was wondering if anybody could help me on trying to...

Does anyone know the best way to put two 12" JL subs under a seat? I have an '00 Jeep Grand Cherokee and I have a feeling I'm going to have to make two custom fiberglass boxes...I've searched for custom boxes but they don't seem to exist. Also, if anyone else has any other ideas on how to...